/Engine/Source/Runtime/Engine/Public/MaterialHLSLGenerator.h
const [UE::HLSLTree::FExpression](API\Runtime\Engine\HLSLTree\FExpression) * GenerateMaterialParameter ( [FName](API\Runtime\Core\UObject\FName) InParameterName, const [FMaterialParameterMetadata](API\Runtime\Engine\FMaterialParameterMetadata) & InParameterMeta, EMaterialSamplerType InSamplerType, const [FGuid](API\Runtime\Core\Misc\FGuid) & InExternalTextureGuid )